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Cell ID extension in femtocell environments

Kwon, Sungoh ; Lee, Neung-Hyung

Computer networks (Amsterdam, Netherlands : 1999), 2013-03, Vol.57 (4), p.1048-1062 [Revista revisada por pares]

Kidlington: Elsevier B.V

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Título:
Cell ID extension in femtocell environments
Autor: Kwon, Sungoh ; Lee, Neung-Hyung
Materias: Access methods and protocols, osi model ; Applied sciences ; Cell identification ; Computer science; control theory; systems ; Computer systems and distributed systems. User interface ; Exact sciences and technology ; Femtocell ; Mathematical problems ; Radiocommunications ; Simulation ; Software ; Studies ; Telecommunications ; Telecommunications and information theory ; Teleprocessing networks. Isdn ; Wireless communications ; Wireless networks
Es parte de: Computer networks (Amsterdam, Netherlands : 1999), 2013-03, Vol.57 (4), p.1048-1062
Descripción: In this paper, we solve a cell identification problem in a femtocell environment. Wireless communication standards specify physical cell identifiers (PCIs) for user entities (UEs) to discriminate data from different cells and for networks to identify cells. However, in the densely deployed area, the number of PCIs for femtocells may not be sufficient. The scarcity of PCIs results in identification ambiguity due to duplicated PCIs in a certain area, which may result in handover failure. Using time synchronization between femtocells and macro-cells, we propose a scheme to efficiently identify cells in a femtocell environment. The proposed scheme defines the virtual cell identifier (vID) of a femtocell as the system frame number offset of the femtocell with respect to a macro-cell and differentiates femtocells with combinations of vIDs and PCIs. Our scheme can increase the number of cell identifiers up to 1024 times using even coarse local time synchronization without changing the existing physical layer specification. The improvement in cell identification resolution reduces redundant message transactions, resulting in network performance enhancement. Since our scheme demands only local time synchronization between adjacent cells, it can be applied to asynchronous as well as synchronous wireless systems. We verify the proposed scheme via simulations in various environments.
Editor: Kidlington: Elsevier B.V
Idioma: Inglés

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Cell ID extension in femtocell environments

Kwon, Sungoh ; Lee, Neung-Hyung

Kidlington: Elsevier B.V

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